Jar cap or closure.



Patented May 7', 1912.

\ .i wuamto@ QR) ift :1 c oom MMM T25 in cooking or processing the product in the UNITED STATES PATENT OFFICE.

EDWARD D. SCHMITT, or' BALTIMORE, MARYLANI), AssIGNoR, BY DIRECT AND MESNE. ASSIGNMENTS, To THE PUREFoo-:D PROCESS COMPANY or BALTIMORE, MARYLAND,

A CORPORATION F MARYLAND.

yJ'AIRIVCAI 0R CLOSURE` Specicaton' of Letters Patent.`

Patented May 7, 1912.

Application filed November 18, 1909, Serial No. 528,782. Renewed February 14, `1911. Serial No. 608,595.

To all whom it may concern: Y

Be it known that I, EDWARD I). SCHMITT, a citizen of` the United States, residing at` Baltimore city and State of Maryland, have inventedcertain new and useful Improvements in Jar Caps or Closures, of which the following is a specification. -This invention relates to improvements *in -j'ar caps or closures and 1nore] articu i0 larly to a oap adapted to close a jar in which the contents are cookedv or processed after sealing. l f

The construction is such that apositivev y and permanent' lock is eiected betweerrthe llfiange ofthe cap fand the locking shoulder on the bottle, thusproducing `an hermeticseal and at the same time permitting an'- exapansion or movement of thecentral portion of the cao, Withou t destroying the `liermetical charactei1 of the seal. l l l In my Patent Number 933,347, dated Sep teinber`7, 1909, I have described and shown aeap, the central portion of which adapt ed to expand under the-pressure generated jar, and toY this extent the present invention is netunlike the invention set toi-th. in the patent but in the present instance,-Il`1ave deviseda novelrneans for locking the cap to 3.0 the jar which produces an. absolutely posi.; ytive lock while permitting a certain portion of the closure to expand and a construction wherein the final torni oi' thc cap when applied to the jar, will present a flange oren- 3,5 gaging point by which the cap may be readily removed 'from the jar by a suitable tool or instrument.

So far as. I am aware. I am the first to ,.provide a closure for jars adapted to relbceive fruit, vegetables and like toodproducts, with which the jar is closed and permanently scaled prior to cooking or processing the product. Since thr-` pressure generated. in the cooking ot the product is con- -siderable during thev cooking process, it is essential that a portion ot' the closure or cap give or expand to accommodate such pressure, as well. as being capable of a certain movement which takes place after the im cooking lprocess 'due to changes of conditions which occur in the cooling process, 'out such movement must not aiiectthe hermetio character ot' the seal.l With this puri pose in view, I have devised a closure shown in the accompanying drawing and Vwhich will be fully described in the following specification, and the points ot novelty set forth in the claims.

In the drawings 'illustrating the inven tion: Figure l is a central view of the upper portion ofa jar Witha capl section in' juixta- Aposition thereto; Figi- 2 is a similar View of l lar and cap, showing thecap 1n the position '1t assumes before the sealing pressure vhas been applied; Fig. is a similar view of the Jar with the cap applied, showing the 'capi in the position it assumes duringthe application of the sealing pressure, there being also shown in dotted lines, a sealing tool with which the seal may be applied; and/I0 FigQ/i is an enlarged detail view of one edge otthe jar mouth. with a portion of the ,i cap lockedy to the jar, and showing the final position of the cap and a-portion of' the edgeof the sealing tool. 75

Referring to the drawings, the numeral l designates ajarwith which the closure is adapted for use. This is formed with an external locking shoulder.` or bead 2, a rounding lip 3 which runs into an inclined 80 surface l of the inter-lor wall 'of Ithe jar, the Y purpose of which formation will presently appear.

numeral .5 indicatesfrny improved cap, which is made of metal, preferably tin, and is termed with a slightly concavo-convexv ce1it1al-poition 6, surrounded by an aunular chaniudworgroove 7 which, in thc sealing operation,` is adapted to receive a sealing-gasket 8, ofuioinpressible material such as rubber, and thedip or upper edge of the jar. The inner wallofft hannel is inr.-liued,as indicated at 8, to` malte sealing-contact with the inoli face i ot' thev jarjnouth whengtheseal "is applied. Integral with the. outer wall 9 of the channel is a compound flange Formed by lthe bend 10, intermediate wall 10, bend 11, and the outer wall 12, by means ot' which,l latter Wall the cap may be removed from its 10( sealing-contact with the jar or bottle-mouth', by means ot a suitable tool.

Thebend 10 serves as a locking-bead, and will be hereinafter referred toas such. The bend' 11 yise'rves as an engagingbead forthe'sealingool, and AWill be .hereinafter referred to as p uch. By reference ,to Fig. 4 'which .shows a ortion of thecap in final, locked position, it illbe noted that the position of the loch-v .i -bead is in locked-contact,directly under the locking-shoulder 2, andithat the inter- Amediate, vertical -wall has assumed an approximately horizontal position,v causing the outer Wall tobecome spacedapart from the neckof the jar, thereby providing ample room for theV insertion of' the removingtool.

In applying the cap, the same is placed upon the jar in the position shown in Fig. 2 and the central member of a sealing tool is brought'with required force down upon the top ofthe channehsniicient to compress the gasket or' ring 8 upon the upper lip of the bottle to effect an air-tight sealV between said gasket and the lip ofthe bottle. This force is also sufficient, or may be so, to bring the inclined wall 8 into close Contact with the inclined surface 4 in thel bottle mouth. The

sealing tool then exerts` a pressure .upon the annular bead 11, crushing or distorting theI outer edge of themcap, lfrom its original shape, and folding the bead 10 under the locking shoulder 2 of the jar. This movement of the outer edge of the cap is oontinued until the tool is .moved down a su'llicient distance to crush or bend the edge of .the cap out ofthe path of movement of said tool, and folding the bead 10 and the Wall of the cap,` that is to say, that portion of the wall intermediate between the channel' Wall and thelouter periphery of the cap, under the locking shoulder of the bottle, as shown in Fig. L

' The seal-'effected between the upper edge ofthe bottle ishermetic, but at the same time, an auxiliary seal is 'formed between the inclined Wallv 8 of the channel and the inclined vsurface in the mouth of the bottle, and the format-ion' of the cap is such that initial pressure exerted against the dome of the cap, which, while it may spring the centralportion oftheeap slightly upward, will not affect the seal between the gasket and the upper edge of the bottle. Y V,50'

vHavingtlius fully described my. inven f tion, what I'claim isp- 7 1. Amm article of manufacture, a cap or closure having sealing-fiange composed of a plurality of annular, vertical walls, arranged in substantially the samehorizontal plane with the cap-body, said sealing-flange being so formed as to provide a lockingbeati adapted to be forced into locked-contact with. the shoulder of ajar-or bottle.

2. As an article of manufacture, a cap or Ciosurc haring a sealing-iiange composed of a. plurality of annular, vertical walls, arranged substantially in the saine horizontal plane with the rap-body, said seulingdlange being so formed to provide a lockingbead, adapted to be forcedinto locked-noir tact with the shoulder of :tja r orbottle, and an engaging-bead adapted to be engaged by a suitable sealing-tool.

3. As an article of manufacture, a cap or closure having, a sealing-Harige composed of a number of annular, vertical walls, ar' ranged in substantially the saine horizontal planevwith the tapbody, said sealing-flange being so formed as to provide :i lockingbead, adapted to be forced into loeked-co11 tact with the shoulder of a jar or bottle, an engaging-bead, adapted to be encuonntered by a suitable sealing-tool7 and with a snit.

'ablyls'paccd edge to be engaged by a suitable renio\'ing-tool.

In combination 'with a jar or bottle, having a locking surface on the exterior of its neck and an inclined surface. on the interior ofthe neck adjacent to 4the lip, a. cap or closure having :i channel which receives Athe bottle lip, snidrhannel being formed with an 'inclined inner wall adapted t6 'make contact with the`inclined surface of 

